Fognini knows something, he was discussing with Sock in the locker room about Fedal final. But Donskoy interrupted in Dubai. But when Rafa loses Fed will lose as well so Rafa will retire after Shanghai ??? That is why Murray decided to injure himself and Djokovic, to help Berdych.
We should be appreciative of Federer though, because we will never see anything like him again. The fact he can still compete for slams ever after the erosion of his physical skills is really a greater testament to the natural talent he has than the period of time when he was dominating the tour.